Dark matter annihilation around intermediate mass black holes: an update

被引：27

作者：

Bertone, Gianfranco ^{[4
]}

Fornasa, Mattia ^{[2
,3
]}

Taoso, Marco ^{[2
,3
]}

Zentner, Andrew R. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[2] Univ Padua, I-35131 Padua, Italy

[3] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[4] Univ Paris 06, CNRS, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France

来源：

NEW JOURNAL OF PHYSICS | 2009年 / 11卷

基金：

美国国家科学基金会;

关键词：

DIGITAL SKY SURVEY; MEASURING GRAVITATIONAL-WAVES; GAMMA-RAY; NEUTRALINO ANNIHILATION; Z-GREATER-THAN-5.7; QUASARS; ADDITIONAL QUASARS; HIGH-REDSHIFT; PHOTONS; DISCOVERY; GALAXIES;

D O I：

10.1088/1367-2630/11/10/105016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The formation and evolution of black holes (BHs) inevitably affects the distribution of dark and baryonic matter in the neighborhood of the BH. These effects may be particularly relevant around Supermassive and Intermediate Mass Black Holes (IMBHs), the formation of which can lead to large dark matter (DM) overdensities, called spikes and mini-spikes, respectively. Despite being larger and more dense, spikes evolve at the very centers of galactic halos, in regions where numerous dynamical effects tend to destroy them. Mini-spikes may be more likely to survive, and they have been proposed as worthwhile targets for indirect DM searches. We review here the formation scenarios and the prospects for detection of mini-spikes, and we present new estimates for the abundances of mini-spikes to illustrate the sensitivity of such predictions to cosmological parameters and uncertainties regarding the astrophysics of BH formation at high redshift. We also connect the IMBHs scenario to the recent measurements of cosmic-ray electron and positron spectra by the PAMELA, ATIC, H. E. S. S. and Fermi collaborations.

引用

页数：20

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